1. a Mechanics of Naval and Offshore Structures, ENSIETA, 2 rue Verny, 29806 Brest, France;, Email: Creachcadec@ensieta.fr
2. b Mechanics of Naval and Offshore Structures, ENSIETA, 2 rue Verny, 29806 Brest, France
3. c Mechanics of Naval and Offshore Structures, ENSIETA, 2 rue Verny, 29806 Brest, France